Because it turns active on nights of the full moon, it is said to have some link to the lunar phases.

Y

It was discovered at the site of a meteor strike 40 years ago. Its stare can lull its foes to sleep.

Omega Ruby

Lunatone was discovered at a location where a meteoroid fell. As a result, some people theorize that this Pokémon came from space. However, no one has been able to prove this theory so far.

Alpha Sapphire

Lunatone becomes active around the time of the full moon. Instead of walking, it moves by floating in midair. The Pokémon's intimidating red eyes cause all those who see it to become transfixed with fear.